Linear (in)dependent vector sets

[madking153]

are 6, 3*(sinx)^2 and 2*(cosx)^2 - linearly independent ?

Can someone explain how to determine it ?

 

[Muzza]

What have you tried?

You might want to make use of the Pythagorean identity (that sin^2(x) + cos^2(x) = 1).

 

[madking153]

how i use the identity to solve that problem

 

[Data]

well, what does it mean for things to be linearly independent?